Door



J. BOCA DOOR Filed NOV. 18, 1925 July 3, 1928.

Patented July 3, 1928.

UNITED STATES PATENT OFFICE.

JOSEPH BOCA, OF FLINT, MICHIGAN, ASSIGNOR TO GENERAL MOTORS CORPORATION, .01'

' DETROIT, MICHIGAN, A CORPORATION OF DELAWARE.

'.DOOB.

Application led November 18, 1925. Serial No. 69,834.

The object of this invention is to provide a door particularly designed for use 1n automobiles, wliich may be cheaply made, for the most part from sheet metal, and easily as- 5 sembled. While manufacture is facilitated the finished productv is nevertheless very strong and of such form that it presents an attractive appearance.

Reference is now made' to the following 10 specification and the accompanying drawing for more detailed description of the invention and of the objects and advantages thereof.

In the drawings:

Figure 1 is a side elevation of the door looking at the rear face thereof;

Figures 2 to 6 are sectional viewstaken on lines indicated by corresponding numerals appearing in Figure 1.

The front member of the door is indicated by the reference character 2. This member is preferably provided with an upper flange 4 and a lower flange 6 forming, respectively, the top and bottom of the door. The free edges of these flanges are preferably rolled to form beads 8 and channels 9, the latter to receive a finishing panel as will be later described.

The sides of the door are constituted by members 12 and 14, respectively, which are secured to the lateral edges of the front member by interlocking joints as shown at l16. The free ends of the side members are preferably rolled to form beads 18 and channels 20 forming continuations of beads 8 and channels 9 previously described. The legs 22 of the channels 20 are connected by a brace 24 to which they may be secured in any preferred manner, preferably by welding.-

26 indicates a panel which forms the rear face of the door and sets within the channels 9 and 20. This panel is preferably of such character as to enhance the appearance of the door and is formed of a layer 28 of stiff material such as ragboard, a layer 30 of any suitable filling or padding material and an outer covering 32 of leather or the like.

In the assembly of the door the bottom 6 is preferably left unfinished and extends substantially in the plane of the front memalso preferably welded together. The panel 26 is now slid into the channels in the side members and the top member whereupon the bottom member 6 is forced into the po-y sition shown in Figures 2 and 6, the chan nels 9 receiving the lower edge of the panel.

The contacting portions of the bottom andV side members are now preferably welded together completing the assembly.

If desired the outside of the door may be covered with flexible material, this material not only giving the door a more finished appearance but serving to hold the] panel in position.

I claim:

1. A metal door construction comprising a front member having upper and lower flanges forming the top and bottom of the door respectivel side members each having one edge t ereof in interlocking engagement with the lateral edges of the front member, said side members being formed adjacent the opposite edges thereof to rovide a channel, a brace connecting one o the legs of said channels and a panel member fitting in said channels.

2. A metal door construction comprising a front member having upper and lower flanges forming the top and bottom of the door respectively, said front member having its lateral edges reversely bent to form channels, side members each provided at one edge with an outwardly extending flange fitting in one of said channels and at the opposite edge with an inwardly extending flange, and a brace connecting said last named flanges and holding said side members with the first named flanges in locking engagement with the said channels.

3. A door as defined in claim 2, said top, bottom and side members being formed to provide a continuous inwardly facing channel for receiving a finishin panel.

In testimony whereof I a x my signature.

. JOSEPH BOCA-.4

sus 

